-- @testpoint: opengauss关键字Hour(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists Hour;
create function Hour(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists Hour;

--关键字带双引号-成功
drop function if exists "Hour";
create function "Hour"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists "Hour";

--关键字带单引号-合理报错
drop function if exists 'Hour';
create function 'Hour'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--关键字带反引号-合理报错
drop function if exists `Hour`;
create function `Hour`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/